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Assessment of Yield Losses in Maize Field Caused by Ostrinia Nubilalis Hbn.
(Lepidoptera : Pyralidae) at Fayoum Governorate.
- Sabra I. M., M. M. I. Khewa And M. S. I. Shalaby
- Plant Protection Research Institute- ARC, Dokki, Giza, Egypt
- The Third International Conference onIPM Role in Integrated Crop management and Impacts on Environment and Agricultural Products. 26-29 November 2005, Giza, Egypt.
Abstract
The yield loss in maize caused by European corn borer (ECB) Ostrinia nubilalis was investigated in Fayoum Governorate, Egypt in 2003 and 2004 seasons. Results showed that ECB larvae caused damage in both ear (shank, grain and ear top) and stalk at different levels of the plant (tassel, tassel + one leaf, tassel + two leaves, tassel + three leaves and at ear level). The total percent of infested plants with ECB were 29.2% (10.5 stalks + 18.7 ears) and 28.6% (10.3 stalks + 18.3 ears) in 2003 and 2004 seasons, respectively.
Based on the data obtained from simulated and natural infestation using a given equation, yield loss could be estimated by field survey of the number of stems broken at different plant levels. The actual loss in grain yield was 0.38 and 0.31 kg/100 plants in 2003 and 2004 seasons, respectively, compared to 0.35 and 0.29 kg/100 plants estimated by the given equation. The differences between the actual and estimated loss in yield is not considerable. This finding ascertains that the use of such equation facilitate the assessment of ECB damage to maize plants through field observation of infestation symptoms as broken stems only.
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The Arab Scientists in Cooperation with The High Institute of Marine Research. Publish all the researches abstracts, which presented in The Regional Workshop on Marine Sciences and Natural Resources, Tishreen University, Lattakia, Syria, 25-26 May 2004.
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The Arab Scientists in Cooperation with The Egyptian Society for Biological Control of Pests . Publish all the researches abstracts, which presented in The First Arab Conference of Applied Biological Pest Control, Cairo, Egypt, 5-7 April 2004.
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The First International Symposium on Environnement protection for development Biotechnological aspects. Fez, December
15 – 17, 2004.
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The Second Syrian-Egyptian conference in the Agriculture and Food.
Agriculture Faculty, Al-Baath university, Homs, Syria. 25-28 April, 05
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Current Status of Plant Protection in Yemen and Future Strategy.
Faculty of Agriculture, Sana'a University, Sana'a, yemen. December 18-20/2004
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The 9th International Conference of the Orthopterists’ Society
Canada, on August 14 19, 2005
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The First Arab Conference on Applications of Biological Control of Pests in Arab Countries
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New Workshop
Middle-East Academy for Medicine of Ageing
First Annual Middle-East Age & Aging Meeting
8-11 April, 2004
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| Publications |
Arab Society for Plant Protection (ASPP) in Cooperation with The Arab Scientists
Publish all the researches abstracts, which presented in the Eighth Arab Congress of
Plant Protection, held in Faculty of Agriculture, Omar Al-Mukhtar University, El-beida
City, Libya, October 12-16,2003
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